That looks great! I built a similar one and really enjoy it, the quefrency v2 (https://keeb.io/products/quefrency-rev-2-60-65-split-stagger...). All in, might have been slightly cheaper though also took plenty of time for soldering and assembly.

Before building this, I had tried a split ortholinear and was eying a moolander. Unfortunately, since I have to use a standard laptop for work (and I’m moving around a lot during the day), I just couldn’t reprogram my fingers on an ortholinear ... I found switching back & forth very challenging and in the end, not worth it.